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All Journal International Journal of Global Operations Research
Suyudi, Mochamad
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Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering Mathematics

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An Empirical Research of Critical Incident of Earthquake Disaster Basedon Credible Association Data Mining Suyudi, Mochamad; Sukono, Sukono
International Journal of Global Operations Research Vol. 2 No. 1 (2021): International Journal of Global Operations Research (IJGOR), February 2021
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v2i1.65

Abstract

Earthquake disasters usually cause panic in the community affected areas, so it is necessary to be analyzed to deal with earthquake events in the future. This paper analyzes data from 9 major earthquakes in Indonesia over the past 4 years and determines 14 critical events. The analysis is based on credible association rules (CAR), data mining, and the maximum clique algorithm. To verify the accuracy of the association relationship and CAR effectiveness, it is performed using a maximum clique algorithm. Based on the results of data mining, that earthquakes have a credible association relationship and have a probability of critical events in various regions in Indonesia. Thus, these results can be used for prediction, early warning, and logistic distribution planning.
Application of Centrality Measures in Determining Regional Development Priorities in the Graph Representation of Kalimantan Island Suyudi, Mochamad; Adli, Fajrul Iqbal; Supriatna, Asep Kuswandi
International Journal of Global Operations Research Vol. 3 No. 1 (2022): International Journal of Global Operations Research (IJGOR), February 2022
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v3i1.119

Abstract

The relocation of the capital of the Republic of Indonesia to the Kalimantan raises new problems in regional development. In this paper the priority areas to be developed on the Kalimantan will be determined using Centrality Measures. The type of centrality measures used are degree centrality, leverage centrality, closseneess centrality, Jordan centrality, and betwenness centrality. The results show that Banjar, Ketapang, Sintang, Kutai  Kertanegara, and Murung Raya areas are the areas that are central to the island of Kalimantan. Although the center of the island of Kalimantan, it is necessary to study the results of this paper with the actual distance of each region.
The Connection Between Finite Projective Planes And Latin Squares Suyudi, Mochamad
International Journal of Global Operations Research Vol. 3 No. 2 (2022): International Journal of Global Operations Research (IJGOR), May 2022
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v3i2.164

Abstract

A Latin square arrangement is an arrangement of r symbols in r rows and c columns, such that every symbol occurs once in each row and each column. When two Latin squares of same order are superimposed on one another, in the resultant array if every ordered pair of symbols occurs exactly once, then the two Latin squares are said to be orthogonal. If in a set of Latin squares, any two Latin squares are orthogonal then the set is called Mutually Orthogonal Latin Squares of order r. Methods of constructing when p is prime or prime power are discussed here. A finite projective plane of order n exists if n is a prime or power of a prime number and it has been assumed that this is the only one that exists, reminiscent of the conjecture about the existence of  Latin squares n x n orthogonal to each other, so that these two existence problems are equivalent.
Determining The Shortest Path In Car Parking Layout In FMIPA UNPAD Using Floyd-Warshall Algorithm Suyudi, Mochamad; Mardiyah, Asma Ainun
International Journal of Global Operations Research Vol. 3 No. 3 (2022): International Journal of Global Operations Research (IJGOR), August, 2022
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v3i3.166

Abstract

Vehicles that are increasingly needed by the community increase the volume of vehicle traffic, resulting in a high demand for parking spaces. Especially in public places such as campuses, offices, shopping centers, and other places. A parking lot is also needed that has a maximum capacity by determining the layout of the vehicle mileage in finding a parking location. In this paper, we are looking for the shortest path in the car park layout at FMIPA UNPAD using the Floyd-Warshall algorithm.
Solving The Fermat-Pell’s Equation with Infinite Continuous Fractions Suyudi, Mochamad
International Journal of Global Operations Research Vol. 3 No. 4 (2022): International Journal of Global Operations Research (IJGOR), November 2022
Publisher : iora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47194/ijgor.v3i4.192

Abstract

The special form is called the Fermat-Pell’s equation where is a positive integer that is not a square. Let's say the solution of this equation is a positive solution as long as x and y are both positive. Since solutions beyond can be arranged in sets of four by sign combinations , it is clear that all solutions will be known once all positive solutions are found. The result which gives us a starting point confirms that any pair of positive integers satisfying the Fermat-Pell’s equation can be obtained from infinite continuous fraction denoting the irrational number √ .
Co-Authors Adli, Fajrul Iqbal Asep Kuswandi Supriatna Mardiyah, Asma Ainun Sukono .